What is the use of Delete method in Sets in JavaScript ?

In JavaScript Sets, the delete() method is used to remove a specified element from the Set. It returns a boolean value indicating whether the element was successfully deleted.

Syntax:

mySet.delete(value);

Parameters:

• mySet: The Set from which the element is to be deleted.
• value: The value of the element to be deleted from the Set.

Example: Here, the delete(3) method call removes the element with the value 3 from the Set, and the deletionResult variable holds true to indicate that the deletion was successful.

Javascript

let mySet = new Set([1, 2, 3, 4, 5]);

// Output: Set { 1, 2, 3, 4, 5 }
console.log(mySet);

// Delete element with value 3 from the Set
let deletionResult = mySet.delete(3);

// Output: true (indicating successful deletion)
console.log(deletionResult);

// Output: Set { 1, 2, 4, 5 }
console.log(mySet);

Output

Set(5) { 1, 2, 3, 4, 5 }
true
Set(4) { 1, 2, 4, 5 }